Journal of Inorganic Materials ›› 2018, Vol. 33 ›› Issue (5): 507-514.DOI: 10.15541/jim20170325

Special Issue: 光伏材料

• RESEARCH PAPER • Previous Articles     Next Articles

Preparation of Flexible Dye-sensitized Solar Cells Based on Hierarchical Structure ZnO Nanosheets

CHENG Hou-Yan1, LUO Jun1, HUANG Li-Qun1, LI Jia-Ke1, YANG Zhi-Sheng1, GUO Ping-Chun1, WANG Yan-Xiang1, ZHANG Qi-Feng2   

  1. 1. School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China;
    2. Department of Electrical and Computer Engineering, North Dakota State University, Fargo 58108, USA
  • Received:2017-07-04 Revised:2017-08-23 Online:2018-05-20 Published:2018-04-26
  • About author:CHENG Hou-Yan. E-mail: chyzxhy123@163.com
  • Supported by:
    International Science & Technology Cooperation Program of China(2013DFA51000);National Natural Science Foundation of China (51462015);Project of Jiangxi Provincial Department of Science and Technology (20122BDH80003)

Abstract:

ZnO nanosheets/nanoparticles/microspheres composite photoanodes were synthesized in two steps. ZnO nanosheets photoanodes on Ti foil substrates were first prepared with hydrothermal synthesis method, on which ZnO nanoparticles and microspheres were deposited by using chemical bath deposition method. The corresponding photoanodes were assembled into flexible dye-sensitized solar cells (FDSSCs). Effect of Ti foil substrates pretreatment methods and chemical bath deposition process on the properties of ZnO thin films and devices were mainly studied. Phase composition and morphology of Ti foil substrates and ZnO films were characterized with XRD, SEM and TEM. J-V curves of the FDSSCs were tested by solar simulator and Keithley 2400. Electrochemical impedance spectroscopy (EIS) was also carried out to analyze the internal electronic transmission. The results show that when the Ti foil substrates were treated by using acid polishing, and the ZnO nanosheets were modified for 5 h by immersing in 0.15 mol/L methanol solution of zinc acetate after preheat treatment for 24 h, the FDSSCs displayed optimum performance. Its short circuit current density, open circuit voltage, fill factor and photoelectric conversion efficiency were 11.26 mA/cm2, 0.67 V, 0.60 and 4.51%, respectively.

 

Key words: flexible dye-sensitized solar cells, ZnO nanosheets, composite structure ZnO photoanode, performance

CLC Number: